Gib and key



(No Model.) I

T. YOUNG.

GIB AND KEY. No. 373.957. Patented Nov. 29, 1887.

WITNESSES UNITED STATES PATENT OFFICE.

THOMAS YOUNG, OF BRADFORD, PENNSYLVANIA.

GIB AND KEY.

SPECIFICATION forming part of Letters Patent No. 373,957, dated November 29, 1887.

Application filed December 10, 1886. Serial No. 221,214. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS YOUNG, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Keys; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which'it appertains to make and use the same.

In the accompanying drawings, Figure l is sectional view of a journal, box, and strap with my improved key inserted. Fig. 2 is a view of the Wedge partof the key. Fig. 3 is a View of the gib part of the key. Fig. 4c is a View of the locking device detached, and Fig. 5 is a view of the locking device in place.

My improved key can be-used in many positions, but is particularly adapted to take the place of the gib-key and set-screw to "fasten the straparound the box of a pitman or conmeeting-rod.

A is thejournal, around which the boxes B Bare to be clasped by means of the strap 0, and D is the connecting-rod or pitman, through the mortise in which and the slot in the strap 0 the key is inserted.

My improved key is made in two parts, E

V and F, both of which have an inclined plane on the surfaces which are in juxtaposition. The part E has one end screw-threaded, as shown at e. The other part, F, has two projections, f f, pierced with round apertures, through which the threaded stem 6 of the part E passes freely; These two projections are the proper distance apart so as to receive the nut G, which fits on the thread of the stem 0. As the smaller end of the part E is at the stem 6, and the smaller portion of the part F is at its point, it follows that when the parts E and F are placed together, as shown in Fig. 1, the

rotation of the nut G will either tighten or loosen the key in the slot. By screwing up on the nut G the part Eis drawn up and the key firmly wedged in the slot, thus causing the strap 0 to draw the boxes B 13 toward each other and clasp the journal A. When desired to loosen the boxes, the nut G is unscrewed, and, if necessary, the part E can be entirely taken out. The part F is provided with shoulders, as shown at f f", which may be either on the sides or back, so as to hold said part F in its place on the strap 0. The nut G is grooved longitudinally on its periphery, as shown at 9, both for convenience of rotating the nut G and to provide means for fastening said nut G in position and prevent its being jarred loose. This fastening may be attained in many ways; but I prefer the one illustrated. A pin, K, having a thumb-piece or handle, 10, and a flat point, la", is inserted in an aperture through the large end of the part F, between the projections ff. This aperture is chambered or enlarged on one side, so as to form a recess for the reception of the spiral spring I, which is so arranged as to throw the flat point 76 of the pin K into the grooves g g of the nut G. The flat point k of the pin K is made so as to fit into one of such grooves when it lies parallel with them, but so as to lie across such groove when turned at right angles to it.

In Figs. 4. and 5 the pin K is turned so that its flat point k lies across the groove 9 and i does not enter it, while in Fig. 3 it is shown so turned that it would enter a groove, and in Fig. 1 it is shown as if actually therein. Then it is desired to rotate the nut G, the pin K is drawn out so that its flat point 70 is dis engaged from the groove 9, and the pin is then turned to the position shown in Fig. 4. The nut G is then turned, and when it is sutficiently screwed up or unscrewed the pin K is rotated a quarterturn and the spring I snaps the fiat point It into the-groove. If a groove is not immediately under the point, the nut G is turned until the flat point 70 snaps into the groove. The nut is then firmly locked, and cannot be loosened by any jar of the machinery.

What I claim as my invention is-- The combination of the gib F, having perforated projectionsff at one end thereof, and

a recess in the gib adjacent said projections, and a spring in said recess, a pin passing through said spring and gib and provided 5 with a fiat point, 70", projecting laterally, and a wedge-key having a screw-threaded stem, and upon said stem anut having longitudinal grooves, said nut being located between the perforated projections of the gib, substantially as and for the purpose described.

THOMAS YOUNG.

Witnesses:

JAMES 0. Boxes, KENToN SAULNIER. 

